Buggy code:
public class AutoBlockAssigner { private static BooleanConfigValue autoAssignerEnabled = new BooleanConfigValue ( "transitime.autoBlockAssigner.autoAssignerEnabled" , false , ( "Set<seq2seq4repair_space>to<seq2seq4repair_space>true<seq2seq4repair_space>to<seq2seq4repair_space>enable<seq2seq4repair_space>the<seq2seq4repair_space>auto<seq2seq4repair_space>assignment<seq2seq4repair_space>feature<seq2seq4repair_space>where<seq2seq4repair_space>" + "the<seq2seq4repair_space>system<seq2seq4repair_space>tries<seq2seq4repair_space>to<seq2seq4repair_space>assign<seq2seq4repair_space>vehicle<seq2seq4repair_space>to<seq2seq4repair_space>an<seq2seq4repair_space>available<seq2seq4repair_space>block" ) ) ; private static BooleanConfigValue ignoreAvlAssignments = new BooleanConfigValue ( "transitime.autoBlockAssigner.ignoreAvlAssignments" , false , ( "For<seq2seq4repair_space>when<seq2seq4repair_space>want<seq2seq4repair_space>to<seq2seq4repair_space>test<seq2seq4repair_space>automatic<seq2seq4repair_space>assignments.<seq2seq4repair_space>When<seq2seq4repair_space>set<seq2seq4repair_space>to<seq2seq4repair_space>" + ( "true<seq2seq4repair_space>then<seq2seq4repair_space>system<seq2seq4repair_space>ignores<seq2seq4repair_space>assignments<seq2seq4repair_space>from<seq2seq4repair_space>AVL<seq2seq4repair_space>feed<seq2seq4repair_space>so<seq2seq4repair_space>" + "vehicles<seq2seq4repair_space>need<seq2seq4repair_space>to<seq2seq4repair_space>be<seq2seq4repair_space>automatically<seq2seq4repair_space>assigned<seq2seq4repair_space>instead" ) ) ) ; public boolean ignoreAvlAssignments ( ) { } private static DoubleConfigValue minDistanceFromCurrentReport = new DoubleConfigValue ( "transitime.autoBlockAssigner.minDistanceFromCurrentReport" , 100.0 , ( "AutoBlockAssigner<seq2seq4repair_space>looks<seq2seq4repair_space>at<seq2seq4repair_space>two<seq2seq4repair_space>AVL<seq2seq4repair_space>reports<seq2seq4repair_space>to<seq2seq4repair_space>match<seq2seq4repair_space>" + ( ( ( "vehicle.<seq2seq4repair_space>This<seq2seq4repair_space>parameter<seq2seq4repair_space>specifies<seq2seq4repair_space>how<seq2seq4repair_space>far<seq2seq4repair_space>away<seq2seq4repair_space>those<seq2seq4repair_space>" + "AVL<seq2seq4repair_space>reports<seq2seq4repair_space>need<seq2seq4repair_space>to<seq2seq4repair_space>be<seq2seq4repair_space>sure<seq2seq4repair_space>that<seq2seq4repair_space>the<seq2seq4repair_space>vehicle<seq2seq4repair_space>really<seq2seq4repair_space>" ) + "is<seq2seq4repair_space>moving<seq2seq4repair_space>and<seq2seq4repair_space>in<seq2seq4repair_space>service.<seq2seq4repair_space>If<seq2seq4repair_space>getting<seq2seq4repair_space>incorrect<seq2seq4repair_space>matches<seq2seq4repair_space>" ) + "then<seq2seq4repair_space>this<seq2seq4repair_space>value<seq2seq4repair_space>should<seq2seq4repair_space>likely<seq2seq4repair_space>be<seq2seq4repair_space>increased." ) ) ) ; private static IntegerConfigValue allowableEarlySeconds = new IntegerConfigValue ( "transitime.autoBlockAssigner.allowableEarlySeconds" , ( 3 * ( Time . SEC_PER_MIN ) ) , ( "How<seq2seq4repair_space>early<seq2seq4repair_space>a<seq2seq4repair_space>vehicle<seq2seq4repair_space>can<seq2seq4repair_space>be<seq2seq4repair_space>in<seq2seq4repair_space>seconds<seq2seq4repair_space>and<seq2seq4repair_space>still<seq2seq4repair_space>be<seq2seq4repair_space>auto<seq2seq4repair_space>" + "assigned<seq2seq4repair_space>to<seq2seq4repair_space>a<seq2seq4repair_space>block" ) ) ; private static IntegerConfigValue allowableLateSeconds = new IntegerConfigValue ( "transitime.autoBlockAssigner.allowableLateSeconds" , ( 5 * ( Time . SEC_PER_MIN ) ) , ( "How<seq2seq4repair_space>late<seq2seq4repair_space>a<seq2seq4repair_space>vehicle<seq2seq4repair_space>can<seq2seq4repair_space>be<seq2seq4repair_space>in<seq2seq4repair_space>seconds<seq2seq4repair_space>and<seq2seq4repair_space>still<seq2seq4repair_space>be<seq2seq4repair_space>auto<seq2seq4repair_space>" + "assigned<seq2seq4repair_space>to<seq2seq4repair_space>a<seq2seq4repair_space>block" ) ) ; private static final AutoBlockAssigner singleton = new AutoBlockAssigner ( ) ; private static final Logger logger = LoggerFactory . getLogger ( AutoBlockAssigner . class ) ; private AutoBlockAssigner ( ) { } public static AutoBlockAssigner getInstance ( ) { } private boolean isBlockUnassigned ( String blockId ) { } private List < Block > unassignedBlocks ( ) { } private TemporalMatch bestNoScheduleMatch ( AvlReport avlReport , AvlReport previousAvlReport , Block block ) { } private TemporalMatch bestTemporalMatch ( AvlReport avlReport , Block block ) { } private TemporalMatch bestScheduleMatch ( AvlReport avlReport , AvlReport previousAvlReport , Block block ) { <START_BUG> if ( ! ( block . isNoSchedule ( ) ) ) { <END_BUG> AutoBlockAssigner . logger . error ( ( "Called<seq2seq4repair_space>bestScheduleMatch()<seq2seq4repair_space>on<seq2seq4repair_space>block<seq2seq4repair_space>that<seq2seq4repair_space>does<seq2seq4repair_space>not<seq2seq4repair_space>" + "have<seq2seq4repair_space>a<seq2seq4repair_space>schedule.<seq2seq4repair_space>{}" ) , block ) ; return null ; } TemporalMatch bestMatch = bestTemporalMatch ( avlReport , block ) ; if ( bestMatch != null ) { AutoBlockAssigner . logger . debug ( ( "For<seq2seq4repair_space>vehicleId={}<seq2seq4repair_space>and<seq2seq4repair_space>blockId={}<seq2seq4repair_space>and<seq2seq4repair_space>AVL<seq2seq4repair_space>" + "report={}<seq2seq4repair_space>found<seq2seq4repair_space>bestMatch={}" ) , avlReport . getVehicleId ( ) , block . getId ( ) , avlReport , bestMatch ) ; TemporalMatch previousAvlReportBestMatch = bestTemporalMatch ( previousAvlReport , block ) ; if ( ( previousAvlReportBestMatch != null ) && ( previousAvlReportBestMatch . lessThanOrEqualTo ( bestMatch ) ) ) { AutoBlockAssigner . logger . debug ( ( "For<seq2seq4repair_space>vehicleId={}<seq2seq4repair_space>also<seq2seq4repair_space>found<seq2seq4repair_space>appropriate<seq2seq4repair_space>" + ( "match<seq2seq4repair_space>for<seq2seq4repair_space>previous<seq2seq4repair_space>AVL<seq2seq4repair_space>report<seq2seq4repair_space>{}.<seq2seq4repair_space>Previous<seq2seq4repair_space>" + "match<seq2seq4repair_space>was<seq2seq4repair_space>{}" ) ) , avlReport . getVehicleId ( ) , previousAvlReport , previousAvlReportBestMatch ) ; return bestMatch ; } else { AutoBlockAssigner . logger . debug ( ( "For<seq2seq4repair_space>vehicleId={}<seq2seq4repair_space>did<seq2seq4repair_space>NOT<seq2seq4repair_space>get<seq2seq4repair_space>valid<seq2seq4repair_space>match<seq2seq4repair_space>for<seq2seq4repair_space>" + "previous<seq2seq4repair_space>AVL<seq2seq4repair_space>report<seq2seq4repair_space>{}.<seq2seq4repair_space>Previous<seq2seq4repair_space>match<seq2seq4repair_space>was<seq2seq4repair_space>{}<seq2seq4repair_space>" ) , avlReport . getVehicleId ( ) , previousAvlReport , previousAvlReportBestMatch ) ; } } return null ; } private List < TemporalMatch > determineTemporalMatches ( VehicleState vehicleState ) { } public TemporalMatch autoAssignVehicleToBlockIfEnabled ( VehicleState vehicleState ) { } }

Fix:
if ( block . isNoSchedule ( ) ) {